HL-LHC Crab Cavity Field Regulation and Resulting RF Noise Spectrum

The HL-LHC Low Level RF (LLRF) must fulfill three requirements: it must reduce the cavity impedance at the fundamental below the instability threshold, it must regulate the crab cavity voltage precisely (amplitude and phase), and it must provide a cavity field with a spectral purity resulting in negli...

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Detalles Bibliográficos
Autores principales: Baudrenghien, Philippe, Mastoridis, Themistoklis
Lenguaje:eng
Publicado: 2023
Materias:
Accelerators and Storage Rings
Acceso en línea:http://cds.cern.ch/record/2859258
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author Baudrenghien, Philippe
Mastoridis, Themistoklis
author_facet Baudrenghien, Philippe
Mastoridis, Themistoklis
author_sort Baudrenghien, Philippe
collection CERN
description The HL-LHC Low Level RF (LLRF) must fulfill three requirements: it must reduce the cavity impedance at the fundamental below the instability threshold, it must regulate the crab cavity voltage precisely (amplitude and phase), and it must provide a cavity field with a spectral purity resulting in negligible degradation of the integrated luminosity due to transverse emittance growth. In this note, we present a LLRF system that fulfills these objectives. We then provide an estimate of the crab cavity RF noise spectrum for this LLRF system, a key parameter to evaluate transverse emittance growth.
id cern-2859258
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2023
record_format invenio
spelling cern-28592582023-05-23T12:19:23Zhttp://cds.cern.ch/record/2859258engBaudrenghien, PhilippeMastoridis, ThemistoklisHL-LHC Crab Cavity Field Regulation and Resulting RF Noise SpectrumAccelerators and Storage RingsThe HL-LHC Low Level RF (LLRF) must fulfill three requirements: it must reduce the cavity impedance at the fundamental below the instability threshold, it must regulate the crab cavity voltage precisely (amplitude and phase), and it must provide a cavity field with a spectral purity resulting in negligible degradation of the integrated luminosity due to transverse emittance growth. In this note, we present a LLRF system that fulfills these objectives. We then provide an estimate of the crab cavity RF noise spectrum for this LLRF system, a key parameter to evaluate transverse emittance growth.CERN-ACC-NOTE-2023-0006oai:cds.cern.ch:28592582023-05-19
spellingShingle Accelerators and Storage Rings
Baudrenghien, Philippe
Mastoridis, Themistoklis
HL-LHC Crab Cavity Field Regulation and Resulting RF Noise Spectrum
title HL-LHC Crab Cavity Field Regulation and Resulting RF Noise Spectrum
title_full HL-LHC Crab Cavity Field Regulation and Resulting RF Noise Spectrum
title_fullStr HL-LHC Crab Cavity Field Regulation and Resulting RF Noise Spectrum
title_full_unstemmed HL-LHC Crab Cavity Field Regulation and Resulting RF Noise Spectrum
title_short HL-LHC Crab Cavity Field Regulation and Resulting RF Noise Spectrum
title_sort hl-lhc crab cavity field regulation and resulting rf noise spectrum
topic Accelerators and Storage Rings
url http://cds.cern.ch/record/2859258
work_keys_str_mv AT baudrenghienphilippe hllhccrabcavityfieldregulationandresultingrfnoisespectrum
AT mastoridisthemistoklis hllhccrabcavityfieldregulationandresultingrfnoisespectrum

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